Tuck-creaser for sewing-machines



(Model.)

H. C. GOODRIOH. TUGK GRBASBR PoR SEWING MACHINES.

- Patented Apr. 17,1883.

` I Hanny aoarI/'C/ gy M MM l NrTED STATES HARRY C. GOODRICH, OF'OHIGAGO, ILLINOIS.

TUCK-CREASER FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters :Patent No 275,820, dated April 17, 1883. Application filed Aug-ust 8. 1881. (Model.)

To all whom it may concern Be it known that I, HARRY (l. GooDRIcH,

i residing at Chicago, in the county ofGook and State ot' Illinois, and a citizen ot' the United States, have invented a new and useful Im-` detail showing the bearing lor the hinged or pivoted arm carrying 'the creasing devices; Fig. 6, detached views of the secondary arm and the plate or base to which itis hinged, and Fig. 7 a central longitudinal -sectional view taken through the hinged arm.

f This invention relates to that class of tuckcreasers for sewing-machines in which a vibrating arm having a descending movement given thereto by the descent of the needlebar, to which it is connected, in descending engages a secondary arm carrying` a creasing device, and causes such device to 'act in conjunction with a blade. and form a crease or mark on the material, the material passing between the creasing device and the blade, and the pressure of the creasing device thereon producing the crease or mark. In this class'of tuckcreasers the vibrating arm and the secondary arm each have a spring action, by which they return to their normal positions on the ascent of the needle-bar, and the pressure exerted by the creasing device i's derived from the force produced by the descent ot` such bar.

The principal and primary objects of this invention are to render the action ot the" creasing device more effective and reliable in use, and to insure the production of a clean and ydistinct crease or mark. This I accomplish by the construction and arrangement of parts, which I will now proceed to describe in detail, afterward pointing out the improvements in the claims.

1n the drawings, A represents the vibrating arm; B, the at spring or spring-plate; B', the plate carrying orsupporting the secondary arm; C, the support for the vibrating arm; D, the slidingplate; D, the lateral eX- blade; E, the base-plate;vF, the plate for adljusting the parts for the desired width of tuck; G, the secondary arm, carrying the creasing device; H, the hinged or pivoted link-support t'or the creasing device; c, thejournal or pivot ofthe vibrating arm; a. a", the liftinglever or arm; b, the slot inthe end of the fiat spring or spring-plate; o, the socket or bearing of a; d, the rivets for attaching the support, iat spring or spring-plate, and the sliding plate together; c, the guides for maintaining the sliding plate in position; j', the thumb or set screw for attaching the device to the bed-plate ofthe machine; j", the adjusting-slot in the plate F; f, the thumb or set screw tor locking the plate F when adjusted; g, the ears or bearings for attachment of the arm Gr; g', the base-plate ot'the ears or bearings g,- L, the creasing roller or device; t', the blade; j, the catch or lip for holding the material; 7c, the stops on the sides of the arm G; l, the stops on the ears g,- m, the return-spring for the link H; u, the ears or bearings for attach ment ot' thelink H. v

The vibrating arm A may be made ot' a piece of brass wire or other suitable material, and the dat spring or spring-plate B, support C for the arm A, supporting-plate B for the arm, sliding plate D, base-plate E, crease adjusting plate F, and secondary artn`G-1nay be.v

made ot' sheet-brass or other suitable material. The rear end of the arm A has a portion, c, bent at right angles to the body ot the arm,

Atension or arm ot the plate D, carrying the which forms a journal or pivot for the arm, y

and this portion has a return given thereto, which forms an arm or lever, a', by means ot' which the vibrating arm is raised through the action of the flat spring or spring-plate B, the outer or free end of which engages and bears against the under face of the lever or arm a ,and acts to raise such lever or arm and throw the vibrating arm up after each depression.

The dat springor spring-plate B is attached at its inner end by rivets or otherwise to the ICO rear end of the sliding plate, andfiscurved or bent outward and upward after it leaves the plate to give it the required spring action andv ment of a' from occurring and cause a dis-4 placement of the parts. This side movement or end-play can be prevented in other ways, as by forming collars on a each side ot' the support therefor, or by providing the support with a slot to receive the end al', or with ears or guideways, between which the end a is free to move or the flat spring or springplate can be left to act on the lever or arm a without connection between the parts, and attain the desired result ot an upward pressure to return the arm A.

As shown, the plate B, which carries the secondary arm, is an extension of the plate forming the spring; but it may be an independent piece, it' desired, suitably attached to the sliding oradjnsting plate atits rear end, so as to leave its front end free, in the usual manner.

The support C is located above the spring or spring-plate, and is bent or curved to correspond to or nearly to the curvation of the spring or spring-plate, and its inner end and the lower end of the spring or springplate are united by rivets d, one of which rivets, as shown, passes through the plate D and furnishes the means for attaching or uniting these parts together. The outer end'ot the support C extends over and beyond the outer end of the spring or spring-plate, and has ears orpendants e, which form bearings for the journal or pivot a. This support U also forms a stop, against the face of which the arm or lever a strikes when returned by the action of the spring or spring-plate, thereby preventing disengagement of the arm or lever from contact with the spring or spring-plate.

The plate D has at its forward end a side arm or extension, D', on which is located the blade t', in the manner usual for other forms of tuck-markers, and the main portion or body of this plate D has a longitudinal slot, ji, for adjustingpurposes, through which slot the set-screwf" passes to clamp the plate to the base or guide plate. This plate D carries the operating devices, the plate B', springor sprin gplate B, and support C, being attached thereto, so that the relation of the devices will not Ybe changed in adjusting for di'ereut widths of tucks.

The base or guide plate E is located beneath the sliding plate D, which rests thereon, and is somewhat wider than such plate, and has the portion which projects beyond the side of the plate D provided with a longitudinal slot (shown by dotted lines, Fig. 1) for the passage of the set-screwf, by means of which the plate E is secured to the bed-plate ot' the machine in the usual manner. The front end of this plate E is provided with an upwardly-turned edge or flange, e, having suitable openings for the passage of the sliding plate D and the width-adjusting plate F, which flange forms a guide, against which the edge ot' thecloth will travel and cause it to run straight. The widthadjusting plate is located on top of the plate E, and has at its rear end an opening which coincides with the slot in the plate E for the passage ot' the set-screwf, by means of which the plate is attached to the plate E, and its front end is provided with a tongue or extension on which are lines and numbers, by means of which and corresponding lines and numbers on the sliding plate D the desired width of tuck is obtained by adjusting the plates D F in the usual manner. This plate F has a side extension or portion which projects over the plate D, and is provided with alongitudinal slot which coincides with the slotj in the plate D for attaching the plates by the set-screwf. To adjust the plate D for any desired width ot' tuck, the set-screws ff" are loosened and the plate D moved forward or back, as required, and the plate F moved accordingly and in the usual manner.

The secondary arm G is pivoted at its rear end between ears or lugsg on the forward end ofthe plate or arm B, which ears or lugs, as' shown, are formed on a plate or base, g',

which can be clasped around or on or otherwise secured to the end ot' B', or the ears or lugs can be secured directly. to the face of B in some other suitable manner. The front edge or face of these ears or lugs is rounded olf on an arc ot' a circle struck from the pivot-center as a center, so as to allow the arm Gr to have a free movement in a downward direction and 'a free return or movement to the extent rerarm G will strike, the stops k l being arranged and located in such relation to each other as to come in contact when the arm has returned 'or is raised the distance required for the creasl ing device to clear the blade and allow the cloth to feed. These stops prevent the arm G from being thrown over out ot' the way of the descent of the vibrating arm A, and instead of forming the stops k, as shown, by

turning down a side lip or catch on each' sideof the arm G, these stops can be formed by the end of the arm itself by making the body wider than the space between the bearings, so as to leave shoulders on each side.

The link or pendant H, which carries the;

creasing device, is pivoted at its upper end between ears fn, on the arm Grv and depends from such arm, so as to bring the creasing device, when the arm G is at rest, above and over the cloth and blade, to be pressed down and form the crease or mark between the creas- IOS rasee a ing device and the blade. This arm or pendant H hangs down from the arm G with a forward inclination,as shown,and on its lower end is suitably journaled a creasing wheel or device, h, which, as the arm G is depressed, will travel over the blade t' in a forward direction. The ears n are so located in relation to the blade 2 as to be back of orin line, or nearly so, with the rear end ot' such blade, and the forward inclination of the link from its point of pivot is such as to bring the creasing roller or device when the parts are at rest with its center near the inner end of the blade fi, so that such device will travel the length, or nearly so, of the blade in making the crease or mark, the center ot' the pivot orjournal for the creasing device being forward of the eenter ot the pivot for the link, so that the roller will have a perfect freedom of movement and the two pivotal points will not get in line and lock the link H and arm G and prevent a downward movement of the arm.

The spring m is attached at its rear end to the under face of the arm G, and its front end is made to engage with the upper end of the link H. This spring acts to return the link toits normal position on the ascent of the arm G, and its relation to the link is such as to allow a free forward or outward movement of the link from the descent ot the arm,the force with which the spring acts being simply sutioient to return the link and carry the creaser backward or inward without offering-any great amount ofresistance to the forward or outward movement, in attaining which result it is assisted by the inclination ofthe link H and the advantage of leverage which Vthe link has in moving forward, the force being applied at the lower end of the link and the resistance being at the upper end of the link close to the pivot, which forms the fulerum.y Instead of using a.

flat bearing-spring, m, as shown, a coil or rubber spring might be used, located and arranged to bearagainst or on the upper end of the link and throw its lower end backward or inward,

and instead of giving thelink a vforward inclination, as shown, such link might have a backward inclination, in which case the creasing device would startfrom the front of; the blade and travel backward thereover, the link being hung farther forward on the arm G in this case, and the center of the pivot for the creasing device being back of the center of the pivot of the link.

The operation will be readily understood. As

the arm Adescends with the needleits frontend will come in contact with the front end ofthe arm G and carry such arm down w ard, and this downward movement ofthe arm G carries the outer` 0n the upward movement ot' the needle the arm A is carried up, releasing the pressure from the arm G and leaving such arm freeto be returned to its normal condition, which return is secured by the action ot' the spring m,

I which returns the lower end of the link to its continuous crease or mark for the tuck. The

width of tuck is to be adjusted, as nsual,by the gage-marks on the plates.

By hanging the arm A at its attached end in ybearings on a stationary support-and making such end crank-shaped, to be engaged and acted on by a spring or spring-plate to return the arm,itwill be seen that the only resistance offered to the descent of the arm is the resistance ofthe spring-plate, and this resistance will not be very great, owing to the fact that the resistance is close to the fulcrum and the power is applied at a point considerably removed therefrom, by which arrangement but a slight amount ot' power is required to overdownward movement of the arm G. The plate A B' is leftv free and natural, and will not be twisted or turned. The arm G offers no resistance to the downward movement of the needie-bar, and the force of the downward movement passes to the creasing device, increasing the effectiveness of such device. The ,creasing device receives the full benelit of the-downward stroke and pressure of the needle-bar, and is thereby given an increased pressure, and the operation of producing a vclear and distinct mark is more positively assured.

By supporting the creasing device by an arm or pendant having an angle of inclination such device is free to act and no impediment or` resistance is ott'ered, the link swinging readily at its lower end with the downwardmovement ofthe arm G, and traveling the creasing device over-the cloth or material.

By pivoting the actuating-lever A and having it subjected to but a small resistance, as described, and by pivoting the secondary arm G and having itfree and independent ot' the IIS supporting-arm B', and by carrying the creaspower and the resistance, by which means the creasing device receives nearly all ot' the force of the needle-bar, so that such force is applied where it is most needed, directly on the creasing device, giving such device a reliable, eifective, and positive action.

What I claim as new, and desire to secure by Letters Patent, is as follows:

1. In a tuck-marker, the combination, with the pivoted vibrating arm A, of the longitudinal plate B', prolonged at the rear end into an io upwardly-bent flat spring, B, the end o f which acts -on the vibrating arm to restore it to au elevated position, substantially as described. 2. In a tuck-creasing device for sewing-machines, a vibrating arln, A, having its rear end i5 bent to form a bearing portion, a, and a lever or arm, a' a", in combination with a flat spring or spring-arm, B, bearing against the rear end of the arm, substantially as and for the purposes specified.

3. In a tuck-creasing device for sewing-inachines, a vibrating arm, A, having its rear end lient to form a bearing portion, a, and a lever or arm, a' a", in combination with a dat spring or spring-plate, B, having a slot, b, and a support., U, having the bearings c, substantially as and for the purposes specitied.

4. The combination, with the creasing-edge and the vibrating arm, of a plate or arm, B',

provided at its forward end with the plate or 3o base g', having ears g and stops l, the arm G, pivoted between said ears and having Athe stops k at its sides, the spring m, and the link H, carrying a creasing device, substantially as described.

5.-'lhe combination, with the creasing-edge and vibrating arm, of' the plate B, the arm G,

having a hinged connection at one end with the outer end of the plate, the depending link H, pivoted to the outer portion of the hinged arm and carrying a creasing device, and the dat spring m, having one end connected with the under side of the said arm adjacent to or at its hinged end, and its other end acting on a part ot' the link, substantially as shown and described.

6. In a tuck-creasing device for sewing-machines, the combination of the hinged or pivoted arm G, having stops k, and hinged or pivoted link H, carrying a creasing device, with the plate or arm B', and bearings g, having the stops 1f, substantially as and for the purposes specified.

7. In a tuck-creasing device for sewing-machines, the combination ot' the hinged or pivoted arm Gr, having stops k, hinged or pivoted link H, carrying a creasing device, and spring m, with the plate or arm B', and bearing g, having stops l, substantially as and for the purposes specified.

8. In a tuck-creasing device for sewing-machines, a vibrating arm, A, having its rear end bent to form a bearing portion, a, and a lever or arm, a' a", flat spring or spring-plate B, having slot b, and support C, in combination with a hinged or pivoted arm, G, hinged or pivoted link H, carrying a creasing device, plate or arin B', and bearing g, substantially as and for the purposes specified.

HARRY C. GOODRICH.

Witnesses:

O. W. BOND, ALBERT H. ADAMS. 

